#[non_exhaustive]pub enum DatasourcePackage {
AsffSecurityhubFinding,
DetectiveCore,
EksAudit,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against DatasourcePackage
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let datasourcepackage = unimplemented!();
match datasourcepackage {
DatasourcePackage::AsffSecurityhubFinding => { /* ... */ },
DatasourcePackage::DetectiveCore => { /* ... */ },
DatasourcePackage::EksAudit => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when datasourcepackage
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant DatasourcePackage::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
DatasourcePackage::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant DatasourcePackage::NewFeature
is defined.
Specifically, when datasourcepackage
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on DatasourcePackage::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
AsffSecurityhubFinding
DetectiveCore
EksAudit
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl DatasourcePackage
impl DatasourcePackage
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for DatasourcePackage
impl AsRef<str> for DatasourcePackage
source§impl Clone for DatasourcePackage
impl Clone for DatasourcePackage
source§fn clone(&self) -> DatasourcePackage
fn clone(&self) -> DatasourcePackage
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for DatasourcePackage
impl Debug for DatasourcePackage
source§impl Display for DatasourcePackage
impl Display for DatasourcePackage
source§impl From<&str> for DatasourcePackage
impl From<&str> for DatasourcePackage
source§impl FromStr for DatasourcePackage
impl FromStr for DatasourcePackage
source§impl Hash for DatasourcePackage
impl Hash for DatasourcePackage
source§impl Ord for DatasourcePackage
impl Ord for DatasourcePackage
source§fn cmp(&self, other: &DatasourcePackage) -> Ordering
fn cmp(&self, other: &DatasourcePackage) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for DatasourcePackage
impl PartialEq for DatasourcePackage
source§fn eq(&self, other: &DatasourcePackage) -> bool
fn eq(&self, other: &DatasourcePackage) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for DatasourcePackage
impl PartialOrd for DatasourcePackage
source§fn partial_cmp(&self, other: &DatasourcePackage) -> Option<Ordering>
fn partial_cmp(&self, other: &DatasourcePackage) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for DatasourcePackage
impl StructuralPartialEq for DatasourcePackage
Auto Trait Implementations§
impl Freeze for DatasourcePackage
impl RefUnwindSafe for DatasourcePackage
impl Send for DatasourcePackage
impl Sync for DatasourcePackage
impl Unpin for DatasourcePackage
impl UnwindSafe for DatasourcePackage
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more